7% von 180 = 7 / 100 * 180 = 0.07 *180 = 12,6
$${\mathtt{7}}\%{\mathtt{\,\times\,}}{\mathtt{180}} = {\frac{{\mathtt{63}}}{{\mathtt{5}}}} = {\mathtt{12.6}}$$ $${\mathtt{0.07}}{\mathtt{\,\times\,}}{\mathtt{180}} = {\frac{{\mathtt{63}}}{{\mathtt{5}}}} = {\mathtt{12.6}}$$
Gruß radix !